Solving the problem of synchronicity in JavaScript for Angular Translate

Using Angular Translate as a filter in the view has been very effective for me. I have implemented angular-translate-loader-static-files to load external files like locale-en.json.

However, I encountered an issue when attempting to do something like this:

var placeholder = $translate('placeholder.NAME')
                    .then(function (translatedValue) {
                        return translatedValue;
                    });

Instead of getting the word NAME displayed in English, I always receive a promise object {} in the UI.

What is the correct way to handle translations in JavaScript using angular-translate?

EDIT: I attempted the following solution but still faced the same issue:

 var placeholder = '';
                $translate('placeholder.NAME').then(function (translatedValue) {
                    console.log(translatedValue);
                    placeholder = translatedValue;
                }, function(err){
                    console.log(err); // returns placeholder.NAME
                });
                console.log(placeholder);  // returns empty string

Answer №1

let defaultText = '';
$translate('defaultText').then(function (translatedValue) {
  defaultText = translatedValue;
});

Answer №2

To maintain separation of concerns, I suggest avoiding translation logic in your controller and instead translating strings directly within your view using the following approach:

<h1>{{ 'TITLE.HELLO_WORLD' | translate }}</h1>

Answer №3

To retrieve the value instantly without using a promise, you can utilize the instant function:

var translation = $translate.instant('placeholder.NAME');

It is important to note that this method does not wait for the translation files to be loaded. Therefore, it should only be called after ensuring that the translation files have been successfully loaded.

Answer №4

Referencing the website

app.controller('Ctrl', ['$scope', '$translate', function ($scope, $translate) {
$translate(['HEADING', 'CONTENT', 'NAMESPACE.CONTENT']).then(function (translations) {
$scope.heading = translations.HEADING;
$scope.content = translations.CONTENT;
$scope.namespaced_content = translations['NAMESPACE.CONTENT'];
});
}]);

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